CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

10

Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition

CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

3

Glass compositions

04

containing silica

076

with 40% to 90% silica by weight

083

containing aluminium oxide or an iron compound

085

containing an oxide of a divalent metal

C

CHEMISTRY; METALLURGY

03

GLASS; MINERAL OR SLAG WOOL

C

CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

21

Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface

G

PHYSICS

02

OPTICS

B

OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

1

Optical elements characterised by the material of which they are made; Optical coatings for optical elements

G

PHYSICS

06

COMPUTING; CALCULATING; COUNTING

F

ELECTRIC DIGITAL DATA PROCESSING

3

Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements

01

Input arrangements or combined input and output arrangements for interaction between user and computer

03

Arrangements for converting the position or the displacement of a member into a coded form

041

Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means